Documentation Index

Fetch the complete documentation index at: https://docs.wrldwide.ai/llms.txt

Use this file to discover all available pages before exploring further.

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Live Avatar

Turn any portrait photo into a talking, animated avatar. Upload a photo and an audio file — the model generates a synchronized talking head video with natural facial expressions and head movements. Credit Cost: 8–20 credits (model-dependent)
Access: app.wrldwide.ai/live-avatar

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Available Models

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OmniHuman v1.5 — 15 credits ⭐ BEST

Top-quality avatar generation with superior realism

• Input: Portrait photo + audio file
• Output: Talking avatar video
• Character: Most natural expressions, realistic head movements, best lip sync accuracy
• Best for: Professional brand avatars, spokesperson videos, polished content

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Kling Avatar v2 Pro — 12 credits

Kling’s premium avatar model

• Input: Portrait photo + audio file
• Output: High-quality talking avatar
• Character: Professional quality, good expression range
• Best for: Brand content where OmniHuman budget is tight

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Kling Avatar v2 — 8 credits

Kling’s standard avatar model

• Input: Portrait photo + audio file
• Output: Talking avatar video
• Character: Good quality, reliable performance
• Best for: Testing, iteration, batch production

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Live Portrait (Video) — 12 credits

Drive avatar with a reference video’s expressions

• Input: Portrait photo + driver video (video of a real person expressing)
• Output: Portrait animated with the expressions and movements from the driver video
• Character: Transfers exact expression timing from driver video
• Best for: When you want specific expression choreography, not just audio sync

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Live Portrait (Audio) — 15 credits

Live Portrait driven by audio

• Input: Portrait photo + audio file
• Output: Portrait animated to audio
• Character: Natural motion, high quality
• Best for: High-quality audio-driven avatar generation

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SadTalker — 20 credits

Advanced avatar with expression scale control

• Input: Portrait photo + audio file
• Output: Talking avatar with controllable expression intensity
• Extra setting: Expression Scale (slider) — controls how expressive the avatar becomes
• Character: Detailed expression control, distinct style
• Best for: When you need fine-grained control over expression intensity

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How to Use

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Model Comparison

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Use Cases

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Brand Spokesperson

Create a branded AI spokesperson — upload a generated or licensed portrait, add a professional voice-over, and produce a consistent spokesperson for ads, onboarding, or product demos.

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Multilingual Content

Record voice-overs in 5 languages, generate the same avatar speaking each language. Localize video content at scale without hiring multi-language talent.

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UGC-Style Talking Heads

Generate UGC-style talking head videos for ads without filming. Combine with Face Swap to customize the avatar appearance.

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Product Demo Narration

Place a talking avatar next to a product animation to narrate features. Combine with Product Animation for a complete product showcase video.

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Tips for Best Results

Portrait Photo:

• Neutral background is ideal (can remove background first with Background Removal)
• Eyes open, looking roughly toward camera
• Good natural lighting, avoid harsh flash
• At least 512×512 resolution

Audio:

• Studio or near-studio quality is ideal
• Clear enunciation
• Minimal background noise
• Keep pauses natural (the avatar will pause movements to match)

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Next Steps